scholarly journals Characteristics of CO2 Hydrate Formation and Dissociation in Glass Beads and Silica Gel

Energies ◽  
2012 ◽  
Vol 5 (4) ◽  
pp. 925-937 ◽  
Author(s):  
Mingjun Yang ◽  
Yongchen Song ◽  
Xuke Ruan ◽  
Yu Liu ◽  
Jiafei Zhao ◽  
...  
Keyword(s):  
Silica Gel ◽  
Hydrate Formation ◽  
Glass Beads

Kinetics of Methane and Carbon Dioxide Hydrate Formation in Silica Gel Pores

2009 ◽  
Vol 23 (7) ◽  
pp. 3711-3715 ◽  
Author(s):  
Seong-Pil Kang ◽  
Yutaek Seo ◽  
Wonho Jang
Keyword(s):  
Carbon Dioxide ◽  
Silica Gel ◽  
Hydrate Formation ◽  
Carbon Dioxide Hydrate ◽  
Kinetics Of

Formation and Dissociation of Tetrahydrofuran Hydrate in Porous Media

2010 ◽  
Author(s):  
Lei Yao ◽  
Jiafei Zhao ◽  
Chuanxiao Cheng ◽  
Yu Liu ◽  
Yongchen Song
Keyword(s):  
Porous Media ◽  
Pore Size ◽  
Formation Rate ◽  
Hydrate Formation ◽  
Dissociation Rate ◽  
Glass Beads ◽  
Experimental Result ◽  
Adjacent Area ◽  
Sample Container ◽  
Hydrate Saturation

Tetrahydrofuran hydrate has long been used as a proxy of methane hydrate in laboratory studies. This paper investigates the formation and dissociation characters of tetrahydrofuran hydrate in porous media using the magnetic resonance imaging (MRI) technology. Various sized quartz glass beads are used to simulate the sediment. The formation and dissociation processes of THF hydrate are observed. The hydrate saturation during the formation is calculated based on the MRI data. The experimental result indicates that the third surface has an important effect on hydrate formation process. THF hydrate crystals begin to form on the glass beads and in their adjacent area as well as from the wall of the sample container. Furthermore, as the pore size increases, or the formation temperature decreases, the formation rate of THF hydrate gets faster. However, the dissociation rate is mostly dependent on the dissociation temperature rather than the pore size.

scholarly journals A Thermodynamic Study of Methane Hydrates Formation In Glass Beads

2016 ◽  
Vol 16 (1) ◽  
pp. 15
Author(s):  
Tintin Mutiara ◽  
Budhijanto Budhijanto ◽  
I Made Bendiyasa ◽  
Imam Prasetyo
Keyword(s):  
Hydrogen Bonds ◽  
Gas Hydrates ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Glass Beads ◽  
Water Molecules ◽  
Equilibrium Pressure ◽  
Natural Gas Hydrates ◽  
System Pressure ◽  
Energy Of Hydrogen Bonds

Natural gas hydrates are non-stoichiometry compounds, in which the molecules of gas are trapped in crystalline cells consisting of water molecules retained by energy of hydrogen bonds. The experiments of Methane hydrate formation are performed at constant temperature in a reactor filled with various sizes of glass beads and water. Methane gas was fed into the reactor at various initial pressures. Equilibrium condition was reached when the system pressure did not change. The experimental results showed that the size of the glass beads gave very small effect on the equilibrium pressure of methane hydrate formation, so the effect could be neglected. In this study, the equation of Langmuir constant was Ci,CH4=(1/RT)exp[A+(B/T)] with the values of A and B for small cages were 6.8465 and 18.0342. The values of A and B for large cages were 7.7598 and 18.0361

Combination of Silica Gel and Surfactin Promoting Methane Hydrate Formation

2020 ◽  
pp. 1-31
Author(s):  
Amit Arora ◽  
Swaranjit Singh cameotra ◽  
Chandrajit Balomajumder ◽  
Rajnish Kumar ◽  
Anil Kumar Singh ◽  
...  
Keyword(s):  
Silica Gel ◽  
Gas Hydrate ◽  
Methane Hydrate ◽  
Fixed Bed ◽  
Hydrate Formation ◽  
Subtilis Strain ◽  
Chemical Additives ◽  
Gas Hydrate Formation ◽  
Novel Applications

Abstract Recently gas hydrates based technologies have been exploited for few novel applications such as Storage and transpiration of natural gas, gas mixtures separation, CO2 capture ,seawater desalination etc. Most of these applications are currently facing a challenge of low rate of gas hydrate formation. Chemical additives like surfactants can play a role of a good kinetic promoter for gas hydrate formation. The present study reports application of biosurfactant for enhancing gas hydrate formation. Biosurfactant was produced by Bacillus subtilis strain A21. These types of microbes show their presence in the real gas hydrate sites also. The surfactin was characterized using many sophisticated technique conforming the formation of surfactin. It was used in presence of fixed bed media of silica gel and it was observed that surfactin in the presence of silica gel has increased the consumption of moles of methane as well as reduced the induction time also as well as the conversion was also increase up to 27.9 % for 390 minutes for 1000 ppm surfactin hence indicating it to be a clean and novel promoter of methane hydrate formation in combination with silica gel which can replace its synthetic counter parts which are having environmental concerns.

scholarly journals Investigation on methane hydrate formation in silica gel particles below the freezing point

RSC Advances ◽  
2019 ◽  
Vol 9 (26) ◽  
pp. 15022-15032 ◽  
Author(s):  
Jun Liu ◽  
Deqing Liang
Keyword(s):  
Silica Gel ◽  
Methane Hydrate ◽  
Pressure Range ◽  
Freezing Point ◽  
Hydrate Formation ◽  
Gel Particles ◽  
Temperature And Pressure ◽  
Silica Gel Particles

Herein, methane hydrate formation in silica gel was studied in the temperature and pressure range of 253.1–268.1 K and 4.0–6.0 MPa, respectively.

CO2 Hydrate Formation Characteristics in a Water/Brine-Saturated Silica Gel

2014 ◽  
Vol 53 (26) ◽  
pp. 10753-10761 ◽  
Author(s):  
Mingjun Yang ◽  
Yongchen Song ◽  
Lanlan Jiang ◽  
Yu Liu ◽  
Yanghui Li
Keyword(s):  
Silica Gel ◽  
Hydrate Formation

Glutathione oxidase-like activity of glass beads, silica gel and anion-exchange resin modified with cobalt(III)–tetrakis(4-carboxyphenyl)porphine

Talanta ◽  
1998 ◽  
Vol 46 (6) ◽  
pp. 1583-1590 ◽  
Author(s):  
Masaki Mifune ◽  
Rumiko Harada ◽  
Akimasa Iwado ◽  
Noriko Motohashi ◽  
Yutaka Saito
Keyword(s):  
Anion Exchange ◽  
Silica Gel ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Glass Beads
Sign in / Sign up

Export Citation Format

Share Document